I learned basic web development so that I could make this web app https://tpsteiner.github.io/public_companies_map/
I'm a CPA working as an external auditor for public companies filing 10-K financial statements. Looking for a job in public accounting is hard because audit firms do not have many differing characteristics. The one thing that is different is their clients. Clients are required to disclose their auditor, but obtaining a list of clients by firm/location is very hard.
My app uses public government data to plot US public companies on a map, and includes details on the firm that most recently audited their annual financial statements.
The data sources are: 1. a listing of all Form APs filed to the PCAOB (auditor-client relationship data), 2. SEC company data from the Corpwatch API database 3. Google search API for company locations